Hello,

the r-uri is added as a Contact address for 3xx replies -- I don't remember if this is some RFC requirement or just an implementation of the sl function for 3xx replies (well, I haven't implemented those function either).

The active branches of the request are added as contact header to the reply. So you can practically use append_branch() as many times as you need and then do sl_send_reply("3xx", ...). You don't need to append headers to replies explicitely.

Cheers,
Daniel

On 04/06/15 13:59, Ali Taher wrote:

Hello,

 

I’m trying to build new contact header that will be sent from Kamailio as below :

 

 

load_gws(1, $rU, $fu);

append_to_reply("Contact:");

                                                while (next_gw())

                                {

                                                                append_to_reply("$ru");

                                }

                                append_to_reply("\r\n");

                                sl_send_reply("300","Multiple Choices");

                exit;  

 

 

yet I’m getting two Contact headers as shown in below SIP message.

How can I remove second contact header (highlighted below in gray)

 

Via: SIP/2.0/UDP 192.168.26.3:42528;branch=z9hG4bK-d8754z-4c2cc56c3145b446-1---d8754z-;rport=42528;received=192.168.26.3

To: “9612"<sip:9612@192.168.110.181>;tag=b27e1a1d33761e85846fc98f5f3a7e58.1a8d

From: "test"<sip:test@192.168.110.181>;tag=8571af74

Call-ID: Y2MzOTNiOGRhMTc2NDkwZjIxNzZhYTAzZmM0OGE3NDY

CSeq: 2 INVITE

Contact: sip:9612@C001,sip:9612@192.168.26.1,sip:9612@192.168.26.6,sip:9612@192.168.26.8

Contact: sip:9612@192.168.26.8

Server: kamailio (4.1.8 (x86_64/linux))

Content-Length: 0

 

 

Thanks,

Ali



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